Annual report pursuant to Section 13 and 15(d)

Other Intangible Assets, Net (Future Amortization Expense) (Details)

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Other Intangible Assets, Net (Future Amortization Expense) (Details) - Other Intangible Assets
$ in Millions
Dec. 31, 2017
USD ($)
Finite-Lived Intangible Assets [Line Items]  
2018 $ 93
2019 57
2020 26
2021 1
2022 $ 0